drm/amd/display: Do not silently accept DCC for multiplane formats.

Silently accepting it could result in corruption.

Signed-off-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index ba49322..72bfc56 100644 (file)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -3829,7 +3829,7 @@ fill_plane_dcc_attributes(struct amdgpu_device *adev,
                return 0;
 
        if (format >= SURFACE_PIXEL_FORMAT_VIDEO_BEGIN)
-               return 0;
+               return -EINVAL;
 
        if (!dc->cap_funcs.get_dcc_compression_cap)
                return -EINVAL;